Mobile rib fragment is a very serious injury of the chest, a surgical emergency; often occurs after a very strong injury. causing severe respiratory and circulatory physiological disorders.

Mobile rib fragments often occur at the most lateral rib fragment or mobile rib fragments are the sternum and posterolateral rib fragments, which are very serious chest injuries that require prompt surgical emergency treatment. If delayed, it can cause severe respiratory and circulatory physiological disorders for the patient.